6 months later - they're still working perfectly. They are noticeable in broad daylight, but obviously aren't going to be as bright as DRLs. Yes, I can see them reflected in cars ahead of me at a stoplight. But compared to other cars with DRLs, well there just isn't much of a comparison. Bottom line is you can see them if you're looking at the front of the van, and it looks cool. They're not bright enough to have any positive safety benefits during the day though.
If you want to test it, just turn on your headlights during the day. Maybe tape an index card in front of the main bulb to block the light. I could try taking a photo, but that never seems to do lighting projects justice.
I just turned the light control to position lights and then looked at the front of the car, and I agree, the lights are noticeable but significantly dimmer than factory LED DRLs, although they are probably as noticeable as halogen DRLs. It's a simple enough mod, even if it requires severing part of a factory wire harness!
Just to clarify how this affects the lighting system and how you did the modification:
1. Normally when you turn the position lights on via the stalk, the LED strips turn on, lights in both the front and rear assemblies turn on, and the interior lights adjust too (the instrument cluster dims, the lights behind all the buttons turn on, although I think during daytime the light sensor in the car will keep the interior lights unchanged).
2. So now that you've cut those 2 wires, the LED strips will always be on as long as the engine is on, but what happens if it is on auto setting or you manually turn the stalk to the position light position? I am assuming that the front and rear marker lights turn on and the interior lights will adjust accordingly?
3. I also don't have radar cruise control, so which particular fuse is that in the fuse box?
4. Which particular add a circuit harness are you using? It seems to have 2 fuses of its own, and the ones I see on Amazon just have one fuse in them. I'm not sure if that makes a difference, or if a specific type of add a circuit harness is needed because there's two output wires coming from it to go to each LED strip.